Symmetrical Lines of Interference Notes

Lines of Interference

What is the amplitude and wavelength of this wave?

Video Instruction

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Constructive and Destructive
Interference in Water Waters

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2. Symmetrical Lines of Interference

- wave patterns produced
by the overlap of
2 wave fronts in phase

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[ HTML5 Version]

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Two Slit Diffraction
(B. Barrett)

What kind of interference
occurs at BA and DC?

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What kind of interference
exists along the solid line?
dotted line?

When crest does not align with crest,
we get some destructive interference

someInt

90 degrees out of phase

Made using a spreadsheet created
by Dan Hosey
- Pittsford Sutherland HS

Use the slider
to adjust the
phase difference

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Maximum Destructive Interference

Made using a spreadsheet created
by Dan Hosey - Pittsford Sutherland HS

Phase Difference - 1/2 wavelength

How many degrees is the shift?

180 degrees

Ex) Name the interference at A, B, C, D?

June 2012